Here is a bit of a backstory on making movies filling in some behind-the-scenes detail. This bit about unions is probably the least surprising but tells you quite a bit about how hard these things are and how much damage unions do:

Much like an early 1900s coal mine, film sets have a union problem. Because the unions are so specialized, the work is intentionally split up into countless departments, and there are consequences for performing a task not specifically assigned to your department. . . .

If there’s an electrical cord in the way, even an extension cord plugged into nothing, someone from the electrical union has to move it, regardless of how easy it might be to do it yourself. And there are unions for everything, making you twist, turn, and dance through so much red tape that you practically mummify yourself with it any time you want to finish a simple task. And when we say ‘everything,’ we mean it — pushing the dolly, holding the clapper, setting up lunch, sculpting Robert Downey Jr.’s facial hair — every conceivable task is assigned to a specific department. And only that department.